Harrow-tooth holder.



A. A. GUERNE.

'rIARROW TOOTH HOLDER.

' RPFLECATION HLEb MAR. 7, 1916.

WI TN Patented Nov. 20, 191?.

' INVENTOR.

A/fi'ed A. Gueme g Q bfl/ ATTORNEYS.

ALFRED A. GUERNE; OF KALAIWAZQC ,v MICHIGAN.

Original applicationifiled September 10, 1915,. Serial No; 858,9 3.1

Specification of Letters Patent.

Patented Nov. 29,1911.

Divided and this applibatibn fil ed March- 7,1916. SeriallTaTo. same.

Toail whom it may concern:

Be it known that. I, ALFRED A. GpE'RNE, a citizenof the United States,,res1d1ng,at

Kalamazoo, Michigan, havev invented cer-;

pecially designed? by me for embodimentv in track harrows such as are illustrated and: described in my application for Letters Patent No. 1,178,230, April l, 1916, filed September 10, 1915, Serial No. 858,901 of which this is a divisional application.

The main object of this invention is to provide an improved harrow tooth holder which is easily and quickly attached to a track harrow and one which is readily adjusted to suit conditions.

Further objects and objects relating to details and economies of construction and operation will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly illustrated and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in which:

Figure I is a side elevation of my improved tooth holder with the same secured to the harrow frame and having a tooth secured thereto.

Fig. II is an enlarged detail sectional view through my improved harrow tooth holder showing the arrangement of the various parts and the manner in which the same is secured to the harrow frame, taken on the broken line 22 of Fig. I.

Fig. III is a top plan view of my improved tooth holder showing the manner in which the harrow tooth is clamped in place.

In the drawing similar reference characters refer to similar parts throughout the several views and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the numbered parts of the drawing, 1 is, the; harrow' frame, 2 the harrow tooth holder, 3 the eye bolt. securing the'ha-rrow tooth al to" the same and 51 and 6 are eye bolt nuts. e

The harrowr frame preferably consists ofr channel bars-and the harrow tooth liolder' Qis of such av width as tofit snugly'between thefianges of thesaid channel bars, the top andbottom edges being'parallel to each other.

2c recess 7' is provided in the; front face: 8 of the holder and an opening is provided through said holder centrally of said recess through which the shank of the eye bolt 3 passes. The rear face of the holder 2 is recessed to accommodate the nut 6. The harrow tooth 4. extends through the eye of eye bolt 3 and lies in notches 9 (Fig. III) provided at the top and bottom of front face 8 and so located with reference to each other as to give the tooth the proper slant. By turning up nut 6 the center of the tooth is sprung inwardly slightly causing the latter to tightly engage the notches whereby the same is gripped securely in position. By this means the tooth is held securely in place and at the same time can be quickly and-easily removed or adjusted on the frame. The tooth holder is secured to the harrow frame 1 by the shank of the eye bolt 3 eX- tending through a suitable opening in the web of the channel bar and is provided and secured thereto by the nut 5, as shown in Fig. II. The rear face of the holder is preferably strengthened by a pair of ribs 10.

I have thus provided a tooth holder which is simple in construction and operation. It may be fitted to an I-beam as well as a channel bar. While nut 6 may be eliminated and nut 5 be used to secure all the parts together and to the channel bar, yet the nut 6 is of advantage.

I desire to claim the structure specifically as shown and also'broadly as pointed out in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Let-- ters Patent is:

1. In a structure of the class described, the combination of a channel bar, a tooth holder adapted to fit between the flanges of said channel bar, a recess in the front face of said holder, tooth receiving notches in the front face of said holder at the top and bottom thereof, a central opening through said holder, an eye-bolt having athreaded shank extending through an opening in the channel bar, a recess in the back face of said holder, a nut on the threaded shank of said eye-bolt in said recess, a har- IOW tooth extending through the eye of said eye-bolt and engaging in said notches, and

a second nut on the shank of said eye-bolt beyond the channel bar for securing the tooth and holder to said channel bar, all coacting substantially as described for the purpose specified.

2. In a structure of the class described, the combination of a channelbar, a tooth holder adapted to fit between the flanges of said channel bar, a recess in the front face of said holder, tooth receiving notches in the front face of said holder at the top and bottom thereof, a central opening through said holder, an eye-bolt having a threaded shank extending through an opening in the channel bar, a harrow tooth extending through the eye of said eye-bolt and engaging in said notches, and a nut on the shank of said eye-bolt beyond the channel bar for securing the holder to said channel bar, all coacting substantially as described for the purpose specified.

3. In a harrow tooth structure, the combination of the frame of a harrow, a block fitted thereto With a seat for the tooth, an eye bolt with a nut for adjusting and re taining the tooth in the seat, and'an additional nut for said bolt for clamping the same in position, as specified.

In witness whereof, I have hereunto set my hand and seal in the presence of two Witnesses.

ALFRED A. GUERNE. [L. s.] lVitnesses:

MARGARET L. GLASGOW, GRACE B. THOMPSON.

Copies of this patent may be obtained for five cents eachv by addressing the .Commissioner of Patents. Washington, D. C," 

